The Federal Government still provides a rebate for the initial purchase of a rooftop solar system.

The rebate is based on the expected output of the system over a 15-year period.

The Queensland Government is conducting a review into the price of solar energy that is sold back into the grid from households and small businesses, with a view to further encouraging people to embrace the power of the sun.

Energy Minister Mark Bailey said the Government was pushing towards one million solar rooftops by 2020.

Mr Bailey said the Queensland Productivity Commission had received the Terms of Reference to commence the public review.

"This process will run concurrently with the recent announcement of Ergon Energy's 150 megawatt large scale renewable Expression of Interest, and will help drive an unprecedented amount of renewable energy investment into the Queensland market."